package org.ccc;

public class T4 {
    private int num;
    public static void main(String[] args) {
        T4 t = new T4();
        t.num++;
        t.update(t);
        System.out.println(t.num);

        T4 a = new T4();
        System.out.println(a.num);
    }

    public void update(T4 t){
        t.num+=66;
    }
}
